|Publication number||US5158565 A|
|Application number||US 07/594,940|
|Publication date||Oct 27, 1992|
|Filing date||Oct 10, 1990|
|Priority date||Oct 10, 1990|
|Publication number||07594940, 594940, US 5158565 A, US 5158565A, US-A-5158565, US5158565 A, US5158565A|
|Inventors||Stuart J. Marcadis, Garey L. McLellan|
|Original Assignee||Dlp, Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (9), Referenced by (39), Classifications (13), Legal Events (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Localization needles for introduction into and retention in body tissue to identify location for surgical treatment.
Reference is made to two U.S. patents directed to related subject matter. Markham, U.S. Pat. No. 4,774,948, filed Nov. 24, 1986 and issued Oct. 4, 1988, discloses a barbed stylet slidable in a windowed needle which permits withdrawal of the barb into the needle for retraction. Hawkins et al, U.S. Pat. No. 4,799,495, filed Mar. 20, 1987 and issued Jan. 24, 1989 discloses a similar barbed stylet and tubular needle with a side opening for projection and retraction of a stylet barb. A third and earlier patent, Ellison, U.S. Pat. No. 4,517,965, issued May 21, 1985, shows a tissue retractor needle with barbs which can be cammed out from the needle by an inner stylet.
The present invention has as an object the provision of a barbed stylet within a windowed needle and, in particular, control means for a surgeon to move the barbed stylet to a position of barb retraction and also to a position where the barb is projected out of the needle window into a localization position.
Briefly, the invention is directed to a hollow needle hub which anchors the proximal end of a barbed stylet and releasably retains the surrounding needle for movement from a sheathing position for the barb to a position projecting the barb outside the needle. The hub is a one-piece split body resiliently closed and expanded by a surgeon's action to release the cannula or hollow needle for sliding movement to retract or expose the barb.
DRAWINGS accompany the disclosure and the various views thereof may be briefly described as:
FIG. 1, a plan view of the needle assembly.
FIG. 2, a sectional view on line 2--2 of FIG. 1.
FIG. 3, a view similar to FIG. 2 in an expansion release mode.
FIG. 4, a view illustrating the needle shifted to barb release.
FIG. 5, a sectional view detailing the stylet barb and hollow needle.
FIG. 6, a sectional view of the sheathed barb.
FIG. 7, a sectional view on line 7--7 of FIG. 2.
FIG. 8, a view of the expander retainer expanded by side pressure.
FIG. 9, a sectional view on line 9--9 of FIG. 2.
FIGS. 10 and 11, side and plan views of a retainer as molded.
FIG. 12, a sectional view on line 12--12 of FIG. 6.
As viewed in FIGS. 1 to 4, a primary cannula hub 30 mounts the proximal end of an inner cannula member 32 at 34 which is molded into the hub. An outer cannula member 36 has a secondary hub end 40 secured thereto and removably receivable in the cannula hub 30.
As shown in FIGS. 10 and 11, the cannula hub 30 is formed as a molded part with a center proximal end 48 with a recess 50 for receiving the proximal end of the inner cannula member or stylet 32. Two identical wings 52 are hingedly attached to the center end 48 and each has an outer groove 54 to receive a portion of a flexible band or O-ring. In FIGS. 1 to 4, the wings 52 are shown folded together and retained by a flexible O-ring 56. This O-ring allows the wings 52 to be spread apart as in FIG. 3.
As shown in FIG. 9, the secondary hub end 40 of the stylet has small knobs or detent projections 57 which fit into opposed recesses 58 or 59 on the inner sides of wings 52 as illustrated in FIG. 11. In FIGS. 1, 2 and 3, the head end 40 of the outer cannula member is shown in the retracted position within the hub 30.
An expander for the wings 52 is illustrated in enlarged dimension in FIGS. 7 and 8. It consists of an oval, hollow central element 70 with two pressure plates 72, one on each side, which when pressed together expand the oval 70 to a circular shape as illustrated in FIG. 8. Now with reference to FIG. 2, the oval elements 70 are shown in section in recesses 74 on the inner side of wings 52. The spreader elements 70 are shown in FIG. 2 in the oval collapsed position, while in FIG. 3 the elements 70 are expanded. In the collapsed position the secondary hub end 40 of the outer cannula is retained between the wings 52 at the proximal end of the hub 30. In the expanded position of FIG. 3, the hub end of the outer cannula can be released from its retained position and moved by the operating surgeon to a second retained position near the distal end of the hub 30 as shown in FIG. 4.
The outer cannula 36 with the secondary hub end 40 has a side aperture or window 80 near the distal end. This window preferably tapers toward the proximal end to stabilize the barb 82 as it is projected out of the window 80. The inner needle or stylet 32 has a resilient barb 82 which is normally retained within the outer cannula 36. However, when the outer cannula and secondary hub end 40 are advanced to the position shown in FIG. 4, the barb exits the window 80 and projects as shown in FIGS. 4 and 5. The inner stylet has a sharpened distal end 84 which pilots the combined inner and outer cannula percutaneously into a position to locate a portion of the human body for biopsy, for example. The release of the barb locates the cannulae for X-rays or until a biopsy needle or other surgical device can be introduced in accordance with the particular procedure. As shown in FIG. 12, the barb 82 preferably has a flat cross-section since this provides a greater retention characteristic. The exit angle A of the barb may vary from 23° to 30° depending on the size of the unit and the intended use.
The retraction of the outer cannula 36 will cam the barb into the outer cannula for removal of the cannulae without damage to the surrounding tissue. The detent recesses 58, 59 serve to orient the cannulae so that the barb 82 is in registry circumferentially with the window 80. The barb 82 can be a separate resilient element welded at its distal end to the surface of a side recess 86 on the inner stylet as at 88 in the enlarged view of FIG. 6.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US4362156 *||Apr 18, 1979||Dec 7, 1982||Riverain Corporation||Intravenous infusion assembly|
|US4517965 *||Jun 27, 1983||May 21, 1985||Ellison Arthur E||Tissue retractor|
|US4713057 *||Feb 27, 1984||Dec 15, 1987||Medical College Of Ohio||Mechanical assist device for inserting catheters|
|US4774948 *||Nov 24, 1986||Oct 4, 1988||Markham Charles W||Marking and retraction needle having retrievable stylet|
|US4790329 *||Jun 12, 1987||Dec 13, 1988||Trustees Of Beth Israel Hospital||Adjustable biopsy localization device|
|US4799495 *||Mar 20, 1987||Jan 24, 1989||National Standard Company||Localization needle assembly|
|US4931059 *||Oct 3, 1988||Jun 5, 1990||Markham Charles W||Needle/stylet combination|
|US4953558 *||Feb 16, 1990||Sep 4, 1990||C. R. Bard, Inc.||Tissue sampling device|
|US4986279 *||Mar 1, 1989||Jan 22, 1991||National-Standard Company||Localization needle assembly with reinforced needle assembly|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US5556410 *||Sep 27, 1993||Sep 17, 1996||M3 Systems, Inc.||Surgical needle with stress-relocation means|
|US5800445 *||Oct 20, 1995||Sep 1, 1998||United States Surgical Corporation||Tissue tagging device|
|US5879357 *||Sep 10, 1997||Mar 9, 1999||United States Surgical Corporation||Apparatus for marking tissue location|
|US6093154 *||Apr 29, 1998||Jul 25, 2000||Denver Biomaterials, Inc.||Biopsy needle|
|US6179860||Aug 18, 1999||Jan 30, 2001||Artemis Medical, Inc.||Target tissue localization device and method|
|US6181960||Jan 15, 1999||Jan 30, 2001||University Of Virginia Patent Foundation||Biopsy marker device|
|US6221006||Feb 9, 1999||Apr 24, 2001||Artemis Medical Inc.||Entrapping apparatus and method for use|
|US6325816||Oct 2, 2000||Dec 4, 2001||Artemis Medical, Inc.||Target tissue localization method|
|US6409742||Oct 2, 2000||Jun 25, 2002||Artemis Medical, Inc.||Target tissue localization device and method|
|US6602265||Feb 26, 2001||Aug 5, 2003||Artemis Medical, Inc.||Tissue separation medical device and method|
|US6635068||Feb 9, 1999||Oct 21, 2003||Artemis Medical, Inc.||Occlusion, anchoring, tensioning and flow direction apparatus and methods for use|
|US6695858||Oct 27, 2000||Feb 24, 2004||Artemis Medical, Inc.||Medical device and methods for use|
|US6758855||Apr 29, 2002||Jul 6, 2004||Artemis Medical, Inc.||Target tissue localization device|
|US6936006 *||Mar 19, 2003||Aug 30, 2005||Novo Nordisk, A/S||Atraumatic insertion of a subcutaneous device|
|US7044957||Feb 2, 2001||May 16, 2006||Ethicon Endo-Surgery, Inc.||Devices for defining and marking tissue|
|US7056286||Nov 12, 2003||Jun 6, 2006||Adrian Ravenscroft||Medical device anchor and delivery system|
|US7229417||Oct 15, 2004||Jun 12, 2007||Ethicon Endo-Surgery, Inc.||Methods for marking a biopsy site|
|US7331980||Jun 9, 2003||Feb 19, 2008||Ethicon Endo-Surgery, Inc.||Occlusion, anchoring, tensioning and flow direction apparatus and methods for use|
|US7479152||Jul 6, 2004||Jan 20, 2009||Artemis Medical, Inc.||Target tissue localization device|
|US7491210||May 22, 2003||Feb 17, 2009||Artemis Medical, Inc.||Medical device and methods for use|
|US7625397 *||Sep 18, 2001||Dec 1, 2009||Ethicon Endo-Surgery, Inc.||Methods for defining and marking tissue|
|US7993329||Aug 13, 2003||Aug 9, 2011||Cook Medical Technologies Llc||ERCP catheter with a removable handle for lithotriptor compatible basket|
|US8277391||Aug 7, 2002||Oct 2, 2012||Devicor Medical Products, Inc.||Methods and devices for defining and marking tissue|
|US8292887||Feb 9, 2011||Oct 23, 2012||Arthrocare Corporation||Internally located return electrode electrosurgical apparatus, system and method|
|US8398672||May 14, 2010||Mar 19, 2013||Nitinol Devices And Components, Inc.||Method for anchoring a medical device|
|US8409239||Nov 25, 2009||Apr 2, 2013||Nitinol Devices And Components, Inc.||Medical device anchor and delivery system|
|US8523809 *||Apr 29, 2010||Sep 3, 2013||Covidien Ag||Device for shielding a sharp tip of a cannula and method of using the same|
|US8801705||Apr 20, 2010||Aug 12, 2014||Arthrocare Corporation||Electrosurgical method and apparatus for removing tissue within a bone body|
|US8979838||May 24, 2010||Mar 17, 2015||Arthrocare Corporation||Symmetric switching electrode method and related system|
|US9283065||Apr 1, 2013||Mar 15, 2016||Nitinol Devices And Components, Inc.||Medical device anchor and delivery system|
|US20030195537 *||May 22, 2003||Oct 16, 2003||Artemis Medical, Inc.||Medical device and methods for use|
|US20030199913 *||Jun 9, 2003||Oct 23, 2003||Artemis Medical, Inc.||Occlusion, anchoring, tensioning and flow direction apparatus and methods for use|
|US20030225361 *||Mar 19, 2003||Dec 4, 2003||Sabra Mads C.||Atraumatic insertion of a subcutaneous device|
|US20040243171 *||Jul 6, 2004||Dec 2, 2004||Fulton Richard Eustis||Target tissue localization device|
|US20050033172 *||Sep 15, 2004||Feb 10, 2005||Artemis Medical, Inc.||Tissue separation method|
|US20050101982 *||Nov 12, 2003||May 12, 2005||Adrian Ravenscroft||Medical device anchor and delivery system|
|US20100114110 *||Oct 30, 2008||May 6, 2010||Arthrocare Corporation||Intervertebral disc access assembly|
|US20100217152 *||Apr 29, 2010||Aug 26, 2010||Covidien Ag||Device for Shielding a Sharp Tip of a Cannula and Method of Using the Same|
|DE19647873A1 *||Nov 19, 1996||May 20, 1998||Daum Gmbh||Insert for indicating position of tumor or other diseased structures|
|U.S. Classification||606/185, 600/567|
|International Classification||A61B19/00, A61B17/00, A61B17/34|
|Cooperative Classification||A61B2090/3987, A61B90/39, A61B17/34, A61B2017/00349, A61B2090/3908, A61B2017/3484|
|European Classification||A61B19/54, A61B17/34|
|Oct 10, 1990||AS||Assignment|
Owner name: DLP, INC., A CORP. OF MI, MICHIGAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MARCADIS, STUART J.;REEL/FRAME:005474/0440
Effective date: 19900828
Owner name: DLP, INC., A CORP. OF MI, MICHIGAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MC LELLAN, GAREY L.;REEL/FRAME:005474/0437
Effective date: 19901002
|Nov 14, 1994||AS||Assignment|
Owner name: MEDTRONIC, INC., MINNESOTA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DEVRIES, JAMES H., CHAIRMAN, DLP, INC.;REEL/FRAME:007203/0458
Effective date: 19940317
|Apr 29, 1996||FPAY||Fee payment|
Year of fee payment: 4
|Mar 29, 2000||FPAY||Fee payment|
Year of fee payment: 8
|Apr 21, 2004||FPAY||Fee payment|
Year of fee payment: 12